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not easy but a must. whatever u see in control drawing consists of NO , NC, relays,contactors and its ferul no:s. for numbering of relays and contactors see inside the panel where debvice is mounrted. it will be denoted by 86, 74, K55 etc. just see in the dawing and locate where the device is and whatever contacts (N0 or NC) in the drawing will be of opposite status when it is energised.
Graham Fields said:
Well all equations aside, can't help wondering if the origins of the original question are not those based on the old techno myth that “It’s cheaper to keep something running continuously i.e. a fluorescent tube than switching it on and off many times because of the start current, current surge.
In reality if this held true I suspect that your Hall effect electricity meter would fly off the wall.
In short a motor of that size would get up to speed that fast that the electricity meter would not have time to register the load change so you would not see any increase in energy consumption.
Curiously I once met an energy conservation consultant whom was asked a similar question in a meeting I attended by the client. He confirmed to the client that it was cheaper to keep the luminaires switched on. When challenged on this point by myself his response was “Well that certainly used to be the case”, not a lot more I can say to that.
Thanks for your opinion.Hello ..
I am Nadir , this kind of technology is requiring an expert in some of disiplines governing Electrical controls ,mechanical,hydraulic process and primordially a materiels specialist in case that you need a new conception of the ( photo voltaic and solar cells ) ..but look .. actually this kind of conceptions are already in the markets…. you can find them, i mean ( wind electircal generator,photo voltaic cells , and solar cells ..etc )
if i had understood correctly your request is that YOU NEED A DESIGNER WHO CAN ENSURE THE ASSEMBLY OF THESE ENERGIES TO DELIVER A UNINTERRUBTIBLE AND CONTINIOUS POWER TO THE USERS '' ,this kind of 'challenge' need expenses ! can say..70000 dollars to produce around 120 kw for the construction the prototype……you dont need another large expenses if you need to produce the double or more of the previous enrgy ….it can be done if your site produce electrical energy from wind as best ..i advice you to conserve and save the energy into a hydraulic processing system using heat transfer media ( heat can be trasferd into high pressure too)
finaly ,what potential of expenses do you can for this kind of facility ,this is an EPC contract and it need 07 to 08 months…
for more inquiries you can contact me in .. nadireed@hotmail.com or mezdir@yahoo.fr phone 213 667860585
thanks
Sudeep said:
Hello,
Can you please give specific title to your topic instead of 'Help me plssss…'? The new specific title will help our readers to make understand the content which would get more replies.
Thank You!
Moderator
which type of ur project tell the project name ??????
Dear Community Member,
Power Factor Correction panels are generating some power losses, as any electrical equipment.
However, the energy savings resulting from the connection of these panels by far compensates their own losses. For example, by improving the power factor from 0.8 to 0.95, the total power losses in the overall system are reduced by 30%!
The electricity bill can be reduced by three factors:
– reduction of the kWh due to power losses,
– reduction of the kVA demand to the Utility,
– reduction or elimination of the kvarh charge, if any.
You can find on the web many case studies illustrating this.
Best regards,
Jacques Schonek
ist of all we'll calculate total kw of all componants, which are proposed to install on sable. then find out the ampers from power formula. and then we multiply the total amperes with 3, in case of inductive load. then we will select the suitable cable according to our calculated amperes from cable chart.
The poles i have designed inlcudes internal MCB+RCD and measurment unit connected by communication.
You may also use a simple KWh meter in the feeder side and current meter incase load shedding is required.
The protection grounding connection method depends in the pole location relative to the feeder equipotential grounding zone and the feeder grounding method (TNC, TNC-S…).Katy said:
Hello,
I am the technical manager for the town hall of a French city.
In the city, we have 30 000 inhabitants and 15 000 cars. People mainly work out of town, and take the train to go to the bigger city 30km ahead. So we are thinking of installing 1 station with 2 terminals and 4 charging points on the car park of the train station. And we will install 1 terminal with 2 charging points in the car park in front of the city hall, where the market takes place.
From the information we got during the Mayors fair, I have doubts on the electric architectures we need to put in place for those 2 stations? Some say we should have a dedicated panel board, others that the specific equipments for measurement or protection should be included in the existing switchboard? … And they are even other manufacturers that recommend that all the protection should be in the charging terminal and not in the switchboard? But I am not sure what is best to get an effective protection?
Hi
You have in France an excellent company specialized in chargers and UPS systems. Its name is Chloride.This information, you supplied here is not enough. I wouldn't spread here all the necessary data, but keep in mind: charging is very sensitive.
Just example: if you don't have enough power 'to start charge' all process go in vain.
By electrical standards, an electrical disconnect must be installed next to the electrical equipment. Necessary measuring apparatus such as overvoltage and overcurrent meters/alarm, fault indicator which are important to the awareness of the user must be installed on the chargers. Of course, we do not just use a charger (blankly) hoping it is working!
